Waller B F, Taliercio C P, Dickos D K, Howard J, Adlam J H, Jolly W
Nasser, Smith & Pinkerton Cardiology, Inc., Indianapolis, Indiana.
Clin Cardiol. 1990 Aug;13(8):577-81. doi: 10.1002/clc.4960130812.
Six patients undergoing aortic valve replacement had rare or unusual causes of isolated, pure aortic regurgitation. Two patients had congenitally bicuspid aortic valves with a false commissure (raphe) displaced to the aortic wall ("tethered bicuspid aortic valve"), two had floppy aortic valves, one had a congenital quadricuspid valve, and one had radiation-induced valve damage.